Color filter panel, display apparatus and method of manufacturing the same

ABSTRACT

A color filter panel includes: a base substrate having a first pixel area, a second pixel area, and a light blocking area between the first pixel area and the second pixel area; a first color filter on the base substrate in the first pixel area; a second color filter on the base substrate in the second pixel area; a first photoluminescence pattern on the first color filter in the first pixel area and configured to convert a color of light; and a second photoluminescence pattern on the second color filter in the second pixel area and configured to convert a color of light. The second photoluminescence pattern partially overlaps the first photoluminescence pattern in the light blocking area.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.16/896,852, filed Jun. 9, 2020, which claims priority to and the benefitof Korean Patent Application No. 10-2019-0089481, filed on Jul. 24,2019, the entire content of both of which is incorporated herein byreference.

BACKGROUND 1. Field

Aspects of exemplary embodiments of the present invention relate to acolor filter panel, a display apparatus including the color filterpanel, and a method of manufacturing the color filter panel.

2. Description of the Related Art

Recently, display apparatuses having light weight and small size havebeen manufactured. A cathode ray tube (CRT) display apparatus waspreviously used due to its performance and competitive price. However,the CRT display apparatus has a weakness with its size and/orportability. Therefore, display apparatuses, such as plasma display(PDP) apparatuses, liquid crystal display (LCD) apparatuses, and organiclight emitting (OLED) display apparatuses, have been highly regarded dueto their small size, light weight, and low power consumption.

The display apparatus may include a color filter panel having a colorconversion structure, such as a quantum dot, to convert a color of lightby using photoluminescence. The color conversion structure may impartdesired colors to the image, improve color reproducibility of the image,and improve light emission efficiency to improve display quality.However, it is difficult to maintain manufacturing efficiency accordingto the structure of the color filter panel as the resolution of thedisplay apparatus increases.

SUMMARY

One or more exemplary embodiments of the present invention provides acolor filter panel with improved quality.

One or more exemplary embodiments of the present invention also providea display apparatus including the color filter panel.

One or more exemplary embodiments of the present invention also providea method of manufacturing the color filter panel.

According to an exemplary embodiment of the present invention, a colorfilter panel includes: a base substrate having a first pixel area, asecond pixel area, and a light blocking area between the first pixelarea and the second pixel area; a first color filter on the basesubstrate in the first pixel area; a second color filter on the basesubstrate in the second pixel area; a first photoluminescence pattern onthe first color filter in the first pixel area and configured to converta color of light; and a second photoluminescence pattern on the secondcolor filter in the second pixel area and configured to convert a colorof light. The second photoluminescence pattern partially overlaps thefirst photoluminescence pattern in the light blocking area.

The first photoluminescence pattern may include a red quantum dot or ared phosphor, and the second photoluminescence pattern may include agreen quantum dot or a green phosphor. The first color filter may be ared color filter, and the second color filter may be a green colorfilter.

The base substrate may have a third pixel area, and the color filterpanel may further include a blue color filter on the base substrate inthe third pixel area and in the light blocking area.

The color filter panel may further include a transparent pattern on theblue color filter in the third pixel area

The color filter panel may further include a first insulating layerbetween the first color filter and the first photoluminescence pattern,between the second color filter and the second photoluminescencepattern, and between the blue color filter and the transparent pattern.

The transparent pattern may partially overlap the secondphotoluminescence pattern and may partially contact the secondphotoluminescence pattern in the light blocking area between the thirdpixel area and the second pixel area.

The color filter panel may further include a first light blockingpattern on the blue color filter in the light blocking area, and a widthof the first light blocking pattern may be smaller than a width of theblue color filter in the light blocking area.

The color filter panel may further include: a second insulating layer onthe first and second photoluminescence patterns; and a second lightblocking pattern on the second insulating layer in the light blockingarea. A portion of the second photoluminescence pattern overlapping thesecond light blocking pattern may have a flat portion that is flattenedthrough a planarization process.

The first color filter and the second color filter may be spaced apartfrom each other in the light blocking area, the first color filter andthe second color filter may form a groove in the light blocking area,and a portion of at least one of the first photoluminescence pattern andthe second photoluminescence pattern may be in the groove.

A portion of the second photoluminescence pattern overlapping the groovein the light blocking area may have a flat portion that is flattenedthrough a planarization process.

According to an exemplary embodiment of the present invention, a displayapparatus includes: a backplane panel including a thin film transistor;and a color filter panel on the backplane panel. The color filter panelincludes: a base substrate having a first pixel area, a second pixelarea, and a light blocking area between the first pixel area and thesecond pixel area; a first color filter on the base substrate in thefirst pixel area; a second color filter on the base substrate in thesecond pixel area; a first photoluminescence pattern on the first colorfilter in the first pixel area and configured to convert a color oflight; and a second photoluminescence pattern on the second color filterin the second pixel area and configured to convert a color of light. Thesecond photoluminescence pattern may partially overlap the firstphotoluminescence pattern in the light blocking area.

The backplane panel may further include a backlight unit configured toemit blue light to the first pixel area and the second pixel area.

The first color filter and the second color filter may be spaced apartfrom each other in the light blocking area, the first color filter andthe second color filter may form a groove in the light blocking area,and a portion of at least one of the first photoluminescence pattern andthe second photoluminescence pattern may be in the groove.

The base substrate may have a third pixel area, and the color filterpanel may further include: a blue color filter on the base substrate inthe third pixel area and in the light blocking area; and a transparentpattern on the blue color filter in the third pixel area. The firstphotoluminescence pattern may include a red quantum dot or a redphosphor, and the second photoluminescence pattern may include a greenquantum dot or a green phosphor. The first color filter may be a redcolor filter, and the second color filter may be a green color filter.

According to an exemplary embodiment of the present invention, a methodof manufacturing a display apparatus is provided. The method includes:forming a third color filter on a base substrate in a light blockingarea and in a third pixel area; forming a first color filter and asecond color filter on the base substrate in a first pixel area and in asecond pixel area, respectively; forming a first photoluminescencepattern on the first color filter, the first photoluminescence patternbeing configured to convert a color of light; and forming a secondphotoluminescence pattern on the second color filter, the secondphotoluminescence pattern being configured to convert a color of light.The first photoluminescence pattern and the second photoluminescencepattern partially overlap each other in the light blocking area.

The first color filter and the second color filter may be spaced apartfrom each other in the light blocking area.

The method may further include planarizing a protruding portion of thesecond photoluminescence pattern to form a flat portion after formingthe second photoluminescence pattern.

The method may further include forming a first light blocking pattern onthe third color filter in the light blocking area before forming thefirst and second color filters.

The method may further include: forming a first insulating layer on thethird color filter, the first color filter, and the second color filterbefore forming the first photoluminescence pattern; forming atransparent pattern on the first insulating layer in the third pixelarea; forming a second insulating layer on the first photoluminescencepattern, the second photoluminescence pattern, and the transparentpattern; and forming a second light blocking pattern on the secondinsulating layer in the light blocking area.

A width of the first light blocking pattern may be smaller than a widthof the third color filter in the light blocking area.

According to the exemplary embodiments of the present invention, becausea first photoluminescence pattern and a second photoluminescence patternand/or first and second color filters are arranged to partially overlapeach other and to contact each other in a light blocking area, asufficient margin in a manufacturing process can be secured, and adefect at an edge portion of the first photoluminescence pattern or thesecond photoluminescence pattern may be prevented or mitigated.

In addition, even when the first photoluminescence pattern and thesecond photoluminescence pattern overlap each other, mixing of differentcolor lights between adjacent pixels may be prevented or mitigated by afirst light blocking pattern, a second light blocking pattern, and athird color filter in the light blocking area.

In addition, the first color filter and the second color filter arespaced apart from each other in the light blocking area to form agroove. Therefore, a height of a protruding portion of the secondphotoluminescence pattern may be reduced even when the firstphotoluminescence pattern and the second photoluminescence patternpartially overlap each other in the light blocking area. Accordingly, adistribution of the profile at the portion where the firstphotoluminescence pattern and the second photoluminescence patternoverlap may be reduced. Accordingly, process quality can be improved.

In addition, in the light blocking area, the protruding portion formedby the second photoluminescence pattern overlapping the firstphotoluminescence pattern may be planarized through a planarizationprocess, such as a polishing process. Accordingly, deterioration of thequality in a subsequent process due to excessive protrusion at theportion where the first photoluminescence pattern and the secondphotoluminescence pattern overlap can be avoided (e.g., a gap margin isreduced by the protrusion when the color filter panel and the backplanepanel are bonded together). Accordingly, process quality can beimproved.

It is to be understood that both the foregoing general description andthe following detailed description are exemplary and explanatory and areintended to provide further explanation of the present invention asclaimed.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects and features of the present invention willbecome more apparent by describing, in detail, exemplary embodimentsthereof with reference to the accompanying drawings, in which:

FIG. 1 is a cross-sectional view illustrating a color filter panelaccording to an exemplary embodiment of the present invention;

FIG. 2 is a cross-sectional view illustrating a color filter panelaccording to an exemplary embodiment of the present invention;

FIG. 3 is a cross-sectional view illustrating a color filter panelaccording to an exemplary embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view illustrating a liquid crystaldisplay apparatus including a color filter panel according to anembodiment of the present invention;

FIG. 5 is a schematic cross-sectional view illustrating an organic lightemitting diode display apparatus including a color filter panelaccording to an embodiment of the present invention;

FIGS. 6A to 6H are cross-sectional views illustrating a method ofmanufacturing the color filter panel shown in FIG. 1;

FIGS. 7A to 7C are cross-sectional views illustrating a method ofmanufacturing the color filter panel shown in FIG. 3;

FIG. 8 is a block diagram illustrating an electronic device according toan example embodiment;

FIG. 9A is a diagram illustrating an example in which the electronicdevice shown in FIG. 8 is implemented as a television; and

FIG. 9B is a diagram illustrating an example in which the electronicdevice shown in FIG. 8 is implemented as a smart phone.

DETAILED DESCRIPTION

It will be understood that when an element or layer is referred to asbeing “on,” “connected to,” or “coupled to” another element or layer, itmay be directly on, connected, or coupled to the other element or layeror one or more intervening elements or layers may also be present. Whenan element or layer is referred to as being “directly on,” “directlyconnected to,” or “directly coupled to” another element or layer, thereare no intervening elements or layers present. For example, when a firstelement is described as being “coupled” or “connected” to a secondelement, the first element may be directly coupled or connected to thesecond element or the first element may be indirectly coupled orconnected to the second element via one or more intervening elements.

The same reference numerals designate the same elements. As used herein,the term “and/or” includes any and all combinations of one or more ofthe associated listed items. Further, the use of “may” when describingembodiments of the present invention relates to “one or more embodimentsof the present invention.” Expressions, such as “at least one of,” whenpreceding a list of elements, modify the entire list of elements and donot modify the individual elements of the list. Also, the term“exemplary” is intended to refer to an example or illustration. As usedherein, the terms “use,” “using,” and “used” may be consideredsynonymous with the terms “utilize,” “utilizing,” and “utilized,”respectively. As used herein, the terms “substantially,” “about,” andsimilar terms are used as terms of approximation and not as terms ofdegree, and are intended to account for the inherent variations inmeasured or calculated values that would be recognized by those ofordinary skill in the art.

It will be understood that, although the terms first, second, third,etc. may be used herein to describe various elements, components,regions, layers, and/or sections, these elements, components, regions,layers, and/or sections should not be limited by these terms. Theseterms are used to distinguish one element, component, region, layer, orsection from another element, component, region, layer, or section.Thus, a first element, component, region, layer, or section discussedbelow could be termed a second element, component, region, layer, orsection without departing from the teachings of example embodiments. Inthe figures, dimensions of the various elements, layers, etc. may beexaggerated for clarity of illustration.

Spatially relative terms, such as “beneath,” “below,” “lower,” “above,”“upper,” and the like, may be used herein for ease of description todescribe one element or feature's relationship to another element(s) orfeature(s) as illustrated in the figures. It will be understood that thespatially relative terms are intended to encompass differentorientations of the device in use or operation in addition to theorientation depicted in the figures. For example, if the device in thefigures is turned over, elements described as “below” or “beneath” otherelements or features would then be oriented “above” or “over” the otherelements or features. Thus, the term “below” may encompass both anorientation of above and below. The device may be otherwise oriented(rotated 90 degrees or at other orientations), and the spatiallyrelative descriptors used herein should be interpreted accordingly.

The terminology used herein is for the purpose of describing particularexample embodiments of the present invention and is not intended to belimiting of the described example embodiments of the present invention.As used herein, the singular forms “a” and “an” are intended to includethe plural forms as well, unless the context clearly indicatesotherwise. It will be further understood that the terms “includes,”“including,” “comprises,” and/or “comprising,” when used in thisspecification, specify the presence of stated features, integers, steps,operations, elements, and/or components but do not preclude the presenceor addition of one or more other features, integers, steps, operations,elements, components, and/or groups thereof.

Hereinafter, embodiments of the present invention will be explained, indetail, with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view illustrating a color filter panelaccording to an exemplary embodiment of the present invention.

Referring to FIG. 1, the color filter panel may include a base substrate100, a first color filter RCF, a second color filter GCF, a third colorfilter BCF, a first light blocking pattern BM1, a first insulating layer110, a first photoluminescence pattern RQD, a second photoluminescencepattern GQD, a transparent pattern W, a second insulating layer 120, andsecond light blocking pattern BM2.

The base substrate 100 may include (or may be formed of) transparent oropaque insulation materials. For example, the base substrate 100 mayinclude (or may be) a quartz substrate, a synthetic quartz substrate, acalcium fluoride substrate, a fluoride-doped quartz substrate, asoda-lime glass substrate, a non-alkali glass substrate, etc. In someembodiments, the base substrate 100 may include a flexible transparentmaterial, such as a flexible transparent resin material.

The base substrate 100 may include a first pixel area RP, a second pixelarea GP, a third pixel area BP, and a light blocking area LB. Forexample, the first pixel area RP may be a red pixel area in which redlight is emitted, the second pixel area GP may be a green pixel area inwhich green light is emitted, and the third pixel area BP may a bluepixel area in which blue light is emitted. The light blocking area LBmay be a non-light emitting area between the first pixel area RP and thesecond pixel area GP and between the second pixel area GP and the thirdpixel area BP.

The third color filter BCF may be disposed below the base substrate 100.The third color filter BCF may be a blue color filter. The third colorfilter BCF may be disposed in the third pixel area BP and in the lightblocking area LB.

The first light blocking pattern BM1 may be disposed under the thirdcolor filter BCF in the light blocking area LB. The first light blockingpattern BM1 may include a light blocking material. A width of the firstlight blocking pattern BM1 may be smaller than a width of the thirdcolor filter BCF in the light blocking area LB.

The first color filter RCF may be disposed under the base substrate 100on which the third color filter BCF and the first light blocking patternBM1 are disposed. The first color filter RCF may be a red color filter.The first color filter RCF may be disposed in the first pixel area RP.

The second color filter GCF may be disposed under the base substrate 100on which the third color filter BCF, the first light blocking patternBM1, and the first color filter RCF are disposed. The second colorfilter GCF may be a green color filter. The second color filter GCF maybe disposed in the second pixel area GP.

The first color filter RCF and the second color filter GCF may partiallyoverlap each other in the light blocking area LB.

The first insulating layer 110 may be disposed under the first colorfilter RCF, the second color filter GCF and the third color filter BCF.That is, the first insulating layer 110 may be between the first colorfilter RCF and the first photoluminescence pattern RQD, between thesecond color filter GCF and the second photoluminescence pattern GQD,and between the blue color filter BCF and the transparent pattern W.

The first photoluminescence pattern RQD may be disposed in the firstpixel area RP under the first color filter RCF. The firstphotoluminescence pattern RQD may convert a color of light by usingphotoluminescence. For example, the first photoluminescence pattern RQDmay include a red quantum dot or a red phosphor configured to convertblue light into red light.

The second photoluminescence pattern GQD may be disposed in the secondpixel area GP under the second color filter GCF. The secondphotoluminescence pattern GQD may convert a color of light by usingphotoluminescence. For example, the second photoluminescence pattern GQDmay include green quantum dots or green phosphors configured to convertblue light into green light.

The red or green quantum dot may be a material that has a nano-scalestructure and may include several hundred to several thousand atoms.Because the quantum dot is relatively very small in size, a quantumconfinement effect may occur. The quantum confinement effect mayindicate that an energy band gap of an object (or element orcomposition) is increased when the object becomes smaller than nanosize. When the light having energy higher than that of the band gap isincident to the quantum dot, the quantum dot may absorb the light andmay emit a second light having a wavelength (e.g., a specificwavelength) and an energy level at the ground state. The wavelength ofthe emitted second light may have a value corresponding to the band gap.By adjusting a size and composition of the quantum dot, the emissionproperty of the quantum dot may be controlled according to the quantumconfinement effect.

The composition of the quantum dots is not limited to a specificcomposition, and any suitable composition may be used. For example, thequantum dot may be a quantum dot of Group II-VI elements, Group III-Velements, Group IV elements, or Group IV-VI elements. The Group IIelements may be selected from the group consisting of at least one ofzinc, cadmium, and mercury. The group III elements may be selected fromthe group consisting of at least one of aluminum, gallium, and indium.The Group IV elements may be selected from the group consisting of atleast one of silicon, germanium, tin, and lead. The Group V elements maybe selected from the group consisting of at least one of nitrogen,phosphorus, and arsenic. The Group VI elements may be selected from thegroup consisting of at least one of sulfur, selenium, and tellurium.

The red phosphor may be one of (Ca, Sr, Ba)S, (Ca, Sr, Ba)₂Si₅N₈,CaAlSiN₃, CaMoO₄ and Eu₂Si₅N₈, but is not limited thereto.

The green phosphor may be at least one selected from the groupconsisting of yttrium aluminum garnet (YAG), (Ca, Sr, Ba)₂SiO₄, SrGa₂S₄,barium magnesium aluminate (BAM), alpha-SiAlON(α-SiAlON),beta-SiAlON(β-SiAlON), Ca₃Sc₂Si₃O₁₂, Tb₃Al₅O₁₂, BaSiO₄, CaAlSiON, and(Sr₁-xBax)Si₂O₂N₂, but is not limited thereto.

The transparent pattern W may be disposed in the third pixel area BPunder the third color filter BCF. The transparent pattern W may includescattering particles. The scattering particles may be particles of (orincluding) TiO₂, Al₂O₃, SiO₂, or the like, and size of the scatteringparticles may be similar in size as the red quantum dot particles or thegreen quantum dot particles.

The second insulating layer 120 may be disposed under the firstphotoluminescence pattern RQG, the second photoluminescence pattern GQD,and the transparent pattern W.

The second light blocking pattern BM2 may be disposed in the lightblocking area LB under the second insulating layer 120. The second lightblocking pattern BM2 may block light so that light of different colorsis not mixed between adjacent pixel areas.

According to the present embodiment, because the first photoluminescencepattern RQG and the second photoluminescence pattern GQD are arranged topartially overlap each other and to contact each other in the lightblocking area LB, a sufficient margin in a manufacturing process can besecured, and a defect at an edge portion of the first photoluminescencepattern RQG and/or the second photoluminescence pattern GQD can beprevented or mitigated.

In addition, even when a portion where the first photoluminescencepattern RQG and the second photoluminescence pattern GQD overlap eachother is formed, a problem of color mixing of different color lightsbetween adjacent pixels is prevented or mitigated by the first lightblocking pattern BM1, the second light blocking pattern BM2, and thethird color filter BCF in the light blocking area LB.

FIG. 2 is a cross-sectional view illustrating a color filter panelaccording to an exemplary embodiment of the present invention.

Referring to FIG. 2, the color filter panel is substantially the same asthe color filter panel shown in FIG. 1 except for the area between thefirst and second color filters. Therefore, repeated description may beomitted.

The color filter panel may include a base substrate 100, a first colorfilter RCF, a second color filter GCF, a third color filter BCF, a firstlight blocking pattern BM1, a first insulating layer 110, a firstphotoluminescence pattern RQD, a second photoluminescence pattern GQD, atransparent pattern W, a second insulating layer 120, and a second lightblocking pattern BM2.

The first color filter RCF and the second color filter GCF are spacedapart from each other at the light blocking area LB so that the firstcolor filter RCF and the second color filter GCF are separated from eachother. A groove may be formed in the light blocking area LB, and aportion of the first photoluminescence pattern RGD and a portion of thesecond photoluminescence pattern GQD may be disposed in the groove.

The first color filter RCF and the second color filter GCF are spacedapart from each other in the light blocking area LB to form the groove.Therefore, a height t1 of a protruding portion of the secondphotoluminescence pattern GQD may be reduced even if the firstphotoluminescence pattern RQD and the second photoluminescence patternGQD partially overlap each other in the light blocking area LB.Accordingly, a distribution of the profile at the portion where thefirst photoluminescence pattern RQD and the second photoluminescencepattern GQD overlap may be reduced. Accordingly, process quality can beimproved.

FIG. 3 is a cross-sectional view illustrating a color filter panelaccording to an exemplary embodiment of the present invention.

Referring to FIG. 3, the color filter panel is substantially the same asthe color filter panel shown in FIG. 2 except for a flat portion of thesecond photoluminescence pattern. Therefore, repeated descriptions maybe omitted.

The color filter panel may include a base substrate 100, a first colorfilter RCF, a second color filter GCF, a third color filter BCF, a firstlight shielding pattern BM1, a first insulating layer 110, a firstphotoluminescence pattern RQD, a second photoluminescence pattern GQD, atransparent pattern W, a second insulating layer 120, and a second lightblocking pattern BM2.

A portion of the second photoluminescence pattern GQD formed in thelight blocking area LB may overlap the first photoluminescence patternRQD (e.g., may overlap a portion of the first photoluminescence patternRQD). Thus, a protruding portion may be formed at where the secondphotoluminescence pattern GQD overlaps the first photoluminescencepattern RQD. The protruding portion may be planarized through aplanarization process, such as a polishing process. Accordingly, aportion of the second photoluminescence pattern GQD formed in the lightblocking area LB may include a flat portion FS planarized through aplanarization process.

In the present embodiment, the flat portion FS is formed in (e.g., is asurface of) the second photoluminescence pattern GQD similar to thestructure in the embodiment shown in FIG. 2. However, the same structuremay be applied to the embodiment shown in FIG. 1. That is, even when thecolor filters overlap, the flat portion FS may be formed in the secondphotoluminescence pattern GQD, thereby improving process quality.

FIG. 4 is a schematic cross-sectional view illustrating a liquid crystaldisplay apparatus including a color filter panel according to anembodiment of the present invention.

Referring to FIG. 4, the display apparatus may include a backlight unitBLV and a display panel disposed on the backlight unit BLV.

The backlight unit BLV may emit blue light and may provide the same(e.g., may provide the blue light) to the display panel.

The display panel may include a backplane panel 20 including a thin filmtransistor and a color filter panel 10 disposed on the backplane panel20. The backplane panel 20 may have various suitable structures.

The color filter panel 10 may include a base substrate including a firstpixel area, a second pixel area, and a light blocking area between thefirst pixel area and the second pixel area, a first color filterdisposed under the base substrate and disposed in the first pixel area,a second color filter disposed under the base substrate and disposed inthe second pixel area, a first photoluminescence pattern disposed in thefirst pixel area under the first color filter and configured to converta color of light by using photoluminescence, a second photoluminescencepattern disposed in the second pixel area under the second color filter,configured to convert a color of light by using photoluminescence, anddisposed partially overlapping the first photoluminescence pattern inthe light blocking area.

The display apparatus may further include a liquid crystal layerdisposed between the backplane panel 20 and the color filter panel 10.The liquid crystal layer may include liquid crystal molecules havingoptical anisotropy. The liquid crystal molecules may be driven by anelectric field to transmit or block (e.g., to selectively transmit orblock) light passing through the liquid crystal layer to display animage.

That is, the display apparatus may be a liquid crystal display (QD-LCD)using photoluminescence.

FIG. 5 is a schematic cross-sectional view illustrating an organic lightemitting diode display apparatus including a color filter panelaccording to an embodiment of the present invention.

Referring to FIG. 5, the display apparatus may include a backplane panel30 and a color filter panel 10 on the backplane panel 30.

The backplane panel 30 may have various suitable structures includingthin film transistors.

The display apparatus may further include an organic light emittingdiode element disposed between the backplane panel 30 and the colorfilter panel 10. The organic light emitting diode element may be anorganic light emitting diode that is configured to emit blue light.

That is, the display apparatus may be an organic light emitting displayapparatus (QD-OLED) using photoluminescence.

FIGS. 6A to 6H are cross-sectional views illustrating a method ofmanufacturing the color filter panel shown in FIG. 1. Hereinafter, inconsideration of the manufacturing process, for the sake of convenienceof explanation, a downward direction is expressed as an upwarddirection. For example, instead of expression that a third color filteris formed under a base substrate, the third color filter is formed onthe base substrate.

Referring to FIG. 6A, a third color filter BCF may be formed on the basesubstrate 100 in the light blocking area LB and in a third pixel areaPB.

Referring to FIG. 6B, a first light blocking pattern BM1 may be formedon the third color filter BCF in the light blocking area LB.

Referring to FIG. 6C, a first color filter RCF may be formed on the basesubstrate 100 and on (e.g., partially on) the third color filter BCF andon (e.g., partially on) the first light blocking pattern BM1. The firstcolor filter RCF may be formed in (e.g., may extend into) a portion ofthe light blocking area LB adjacent to the first pixel area RP.

Referring to FIG. 6D, a second color filter GCF may be formed on thebase substrate 100 at the second pixel area GP, in a portion of thelight blocking area LB adjacent to the second pixel area GP, and on(e.g., partially on) the first color filter RCF. For example, the firstcolor filter RCF and the second color filter GCF may partially overlapeach other in the light blocking area LB.

Referring to FIG. 6E, a first insulating layer 110 may be formed on thethird color filter BCF, the first color filter RCF, and the second colorfilter GCF. In some embodiments, the first insulating layer 110 may alsobe formed on a portion of the first light blocking member BM1 (e.g., ona portion of the first light blocking member BM1 not covered by eitherthe first or second color filter RCF and GCF.

Referring to FIG. 6F, a transparent pattern W and a firstphotoluminescence pattern RQD may be respectively formed in the thirdpixel area BP on the first insulating layer 110 and in the first pixelarea RP on the first insulating layer 110. The first photoluminescencepattern RQD may be formed in a portion of the light blocking area LBadjacent to the first pixel area RP and in the first pixel area RP.

Referring to FIG. 6G, a second photoluminescence pattern GQD may beformed in the second pixel area GP on the first insulating layer 110.The second photoluminescence pattern GQD may be formed in the secondpixel area GP and in a portion of the light blocking area LB adjacent tothe second pixel area GP.

Accordingly, the first photoluminescence pattern RQD and the secondphotoluminescence pattern GQD may partially overlap in the lightblocking area LB. A similar method may be used in the portion of thelight blocking area LB in which the transparent pattern Wand the secondphotoluminescence pattern GQD partially overlap.

Referring to FIG. 6H, a second insulating layer 120 may be formed on thefirst photoluminescence pattern RQD, the second photoluminescencepattern GQD, and the transparent pattern W.

A second light blocking pattern BM2 may be formed in the light blockingarea LB on the second insulating layer 120. Accordingly, the colorfilter panel is manufactured.

FIGS. 7A to 7C are cross-sectional views illustrating a method ofmanufacturing the color filter panel shown in FIG. 3. Because the methodof manufacturing the color filter panel shown in FIGS. 7A to 7C issubstantially the same as the method of manufacturing the color filterpanel shown in FIGS. 6A to 6H except for a planarization process andforming a groove. Therefore, repeated descriptions may be omitted.

Referring to FIG. 7A, a third color filter BCF may be formed on the basesubstrate 100 in a light blocking area LB and in a third pixel area BP.A first blocking pattern BM1 may be formed in the blocking area LB. Asecond color filter GCF may be formed in a second pixel area GP and in aportion of the light blocking area LB adjacent to the second pixel areaGP. A first color filter RCF may be formed in a first pixel area RP andin a portion of the light blocking area LB adjacent to the first pixelarea RP. A first insulating layer 110 may be formed on the first,second, and third color filters RCF, GCF, and BCF, and in someembodiments, on a portion of a first light blocking pattern BM1. Atransparent pattern W and a first photoluminescence pattern RQD may berespectively formed in the third pixel area BP and in the first pixelarea RP. A second photoluminescence pattern GQD may be formed in thesecond pixel area GP. The first photoluminescence pattern RQD and thesecond photoluminescence pattern GQD may partially overlap in the lightblocking area LB.

In this embodiment, the first color filter RCF and the second colorfilter GCF may be formed to be spaced apart from each other in the lightblocking area LB. The first and second color filters RCF and GCF mayform a groove in the light blocking area LB.

Referring to FIG. 7B, a protruding portion of the secondphotoluminescence pattern GQD may be planarized by using a polishingprocess or the like. For example, the protruding portion of the secondphotoluminescence pattern GQD may be flattened to form the flat portionFS. For example, a chemical mechanical polishing (CMP) process using aslurry may be used.

Referring to FIG. 7C, a second insulating layer 120 may be formed on thefirst and second photoluminescence patterns RQD and GQD and on thetransparent pattern W. A second light blocking pattern BM2 may be formedin the light blocking area LB. Accordingly, the color filter panel ismanufactured.

FIG. 8 is a block diagram illustrating an electronic device according toexample embodiments. FIG. 9A is a diagram illustrating an example inwhich the electronic device shown in FIG. 8 is implemented as atelevision, and FIG. 9B is a diagram illustrating an example in whichthe electronic device shown in FIG. 8 is implemented as a smart phone.

Referring to FIGS. 8 through 9B, the electronic device 500 may include aprocessor 510, a memory device 520, a storage device 530, aninput/output (I/O) device 540, a power supply 550, and a display device560. The display device 560 may correspond to the display apparatusshown in FIG. 4 or 5. In addition, the electronic device 500 may furtherinclude a plurality of ports for communicating with a video card, asound card, a memory card, a universal serial bus (USB) device, otherelectronic devices, etc. In an example embodiment, as illustrated inFIG. 9A, the electronic device 500 may be implemented as a television.In another example embodiment, as illustrated in FIG. 9B, the electronicdevice 500 may be implemented as a smart phone. However, the electronicdevice 500 is not limited thereto. For example, the electronic device500 may be implemented as a cellular phone, a video phone, a smart pad,a smart watch, a tablet PC, a car navigation system, a computer monitor,a laptop, a head mounted display (HMD), etc.

The processor 510 may perform various computing functions. The processor510 may be a microprocessor, a central processing unit (CPU), anapplication processor (AP), etc. The processor 510 may be coupled toother components via an address bus, a control bus, a data bus, etc.Further, the processor 510 may be coupled to an extended bus, such as aperipheral component interconnection (PCI) bus. The memory device 520may store data for operations of the electronic device 500. For example,the memory device 520 may include at least one non-volatile memorydevice, such as an erasable programmable read-only memory (EPROM)device, an electrically erasable programmable read-only memory (EEPROM)device, a flash memory device, a phase change random access memory(PRAM) device, a resistance random access memory (RRAM) device, a nanofloating gate memory (NFGM) device, a polymer random access memory(PoRAM) device, a magnetic random access memory (MRAM) device, aferroelectric random access memory (FRAM) device, etc., and/or at leastone volatile memory device, such as a dynamic random access memory(DRAM) device, a static random access memory (SRAM) device, a mobileDRAM device, etc. The storage device 530 may include a solid-state drive(SSD) device, a hard disk drive (HDD) device, a CD-ROM device, etc. TheI/O device 540 may include an input device, such as a keyboard, akeypad, a mouse device, a touchpad, a touch screen, etc., and an outputdevice, such as a printer, a speaker, etc. The power supply 550 mayprovide power for operations of the electronic device 500.

The display device 560 may be coupled to other components via the busesor other suitable communication links. In some example embodiments, thedisplay device 560 may be included in (e.g., may be integrated with) theI/O device 540. As described above, the display device 560 may include acolor filter panel. Because a first photoluminescence pattern and asecond photoluminescence pattern and/or color filters are arranged topartially overlap each other and to contact each other in a lightblocking area, a sufficient margin in a manufacturing process can besecured, and a defect at an edge portion of the first photoluminescencepattern or the second photoluminescence pattern can be prevented ormitigated.

In addition, even when a portion of the first photoluminescence patternand the second photoluminescence pattern overlap each other, it ispossible to prevent (or mitigate) a problem of mixing different colorlights between adjacent pixels by a first light blocking pattern, asecond light blocking pattern, and a third color filter in the lightblocking area.

In addition, the first color filter and the second color filter arespaced apart from each other in the light blocking area to form agroove. Therefore, a height of a portion of the second photoluminescencepattern that protrudes may be reduced even when the firstphotoluminescence pattern and the second photoluminescence patternpartially overlap in the light blocking area. Accordingly, adistribution of the profile at the portion where the firstphotoluminescence pattern and the second photoluminescence patternoverlap may be reduced. Accordingly, process quality can be improved.

The present invention can be applied to organic light emitting displaydevices and various suitable electronic devices including the same. Forexample, the present invention can be applied to a mobile phone, a smartphone, a video phone, a smart pad, a smart watch, a tablet PC, a carnavigation system, a television, a computer monitor, a notebook, and thelike.

The foregoing is illustrative of the present invention and is not to beconstrued as limiting thereof. Although a few exemplary embodiments ofthe present invention have been described, those skilled in the art willreadily appreciate that many modifications are possible in the exemplaryembodiments without materially departing from the novel aspects andfeatures of the present invention. Accordingly, all such modificationsare intended to be included within the scope of the present invention asdefined in the claims and their equivalents. Therefore, it is to beunderstood that the foregoing is illustrative of the present inventionand is not to be construed as limiting the present invention to thespecific exemplary embodiments disclosed herein, and further,modifications to the disclosed exemplary embodiments, as well as otherexemplary embodiments, are intended to be included within the scope ofthe appended claims. The present invention is defined by the followingclaims, with equivalents of the claims to be included therein.

What is claimed is:
 1. A color filter panel comprising: a base substratehaving a first pixel area, a second pixel area, and a light blockingarea between the first pixel area and the second pixel area; a firstcolor filter on the base substrate in the first pixel area; a secondcolor filter on the base substrate in the second pixel area; a firstphotoluminescence pattern on the first color filter in the first pixelarea and configured to convert a color of light; and a secondphotoluminescence pattern on the second color filter in the second pixelarea and configured to convert a color of light, the secondphotoluminescence pattern partially overlapping the firstphotoluminescence pattern in the light blocking area, wherein the firstcolor filter and the second color filter are spaced from each other inthe light blocking area, wherein the first color filter and the secondcolor filter form a groove in the light blocking area, and wherein aportion of at least one of the first photoluminescence pattern and thesecond photoluminescence pattern is in the groove.
 2. The color filterpanel of claim 1, wherein a portion of the second photoluminescencepattern overlapping the groove in the light blocking area has a flatportion that is flattened through a planarization process.
 3. The colorfilter panel of claim 2, wherein the first photoluminescence patterncomprises a red quantum dot or a red phosphor, wherein the secondphotoluminescence pattern comprises a green quantum dot or a greenphosphor, and wherein the first color filter is a red color filter, andthe second color filter is a green color filter.
 4. The color filterpanel of claim 2, wherein the first photoluminescence pattern comprisesa green quantum dot or a green phosphor, wherein the secondphotoluminescence pattern comprises a red quantum dot or a red phosphor,and wherein the first color filter is a green color filter, and thesecond color filter is a red color filter.
 5. The color filter panel ofclaim 1, wherein the base substrate has a third pixel area, and whereinthe color filter panel further comprises: a third color filter on thebase substrate in the third pixel area and in the light blocking area;and a transparent pattern on the third color filter in the third pixelarea.
 6. The color filter panel of claim 5, wherein the third colorfilter is a blue color filter.
 7. The color filter panel of claim 5,further comprising: a first insulating layer between the first colorfilter and the first photoluminescence pattern, between the second colorfilter and the second photoluminescence pattern, and between the thirdcolor filter and the transparent pattern.
 8. The color filter panel ofclaim 7, wherein the transparent pattern partially overlaps the secondphotoluminescence pattern and partially contacts the secondphotoluminescence pattern in the light blocking area between the thirdpixel area and the second pixel area.
 9. The color filter panel of claim8, wherein a portion of the second photoluminescence pattern overlappingthe transparent pattern in the light blocking area has a flat portionthat is flattened through a planarization process.
 10. The color filterpanel of claim 5, further comprising a first light blocking pattern onthe third color filter in the light blocking area, wherein a width ofthe first light blocking pattern is smaller than a width of the thirdcolor filter in the light blocking area.
 11. The color filter panel ofclaim 1, further comprising: a second insulating layer on the first andsecond photoluminescence patterns; and a second light blocking patternon the second insulating layer in the light blocking area.
 12. A colorfilter panel comprising: a base substrate having a first pixel area, asecond pixel area, and a light blocking area between the first pixelarea and the second pixel area; a first color filter on the basesubstrate in the first pixel area; a second color filter on the basesubstrate in the second pixel area; a first photoluminescence pattern onthe first color filter in the first pixel area and configured to converta color of light; and a second photoluminescence pattern on the secondcolor filter in the second pixel area and configured to convert a colorof light, the second photoluminescence pattern partially overlapping thefirst photoluminescence pattern in the light blocking area, wherein aportion of the second photoluminescence pattern overlapping a lightblocking pattern in the light blocking area has a flat portion that isflattened through a planarization process.
 13. The color filter panel ofclaim 12, wherein the first photoluminescence pattern comprises a redquantum dot or a red phosphor, wherein the second photoluminescencepattern comprises a green quantum dot or a green phosphor, and whereinthe first color filter is a red color filter, and the second colorfilter is a green color filter.
 14. The color filter panel of claim 12,wherein the first photoluminescence pattern comprises a green quantumdot or a green phosphor, wherein the second photoluminescence patterncomprises a red quantum dot or a red phosphor, and wherein the firstcolor filter is a green color filter, and the second color filter is ared color filter.
 15. The color filter panel of claim 12, wherein thebase substrate has a third pixel area, and wherein the color filterpanel further comprises: a third color filter on the base substrate inthe third pixel area and in the light blocking area; and a transparentpattern on the third color filter in the third pixel area.
 16. The colorfilter panel of claim 15, wherein the third color filter is a blue colorfilter.
 17. The color filter panel of claim 15, further comprising: afirst insulating layer between the first color filter and the firstphotoluminescence pattern, between the second color filter and thesecond photoluminescence pattern, and between the third color filter andthe transparent pattern.
 18. The color filter panel of claim 17, whereinthe transparent pattern partially overlaps the second photoluminescencepattern and partially contacts the second photoluminescence pattern inthe light blocking area between the third pixel area and the secondpixel area.
 19. The color filter panel of claim 15, further comprising afirst light blocking pattern on the third color filter in the lightblocking area, wherein a width of the first light blocking pattern issmaller than a width of the third color filter in the light blockingarea.
 20. The color filter panel of claim 12, further comprising: asecond insulating layer on the first and second photoluminescencepatterns, wherein the light blocking pattern is on the second insulatinglayer in the light blocking area.